Mechanism for separating coal



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Patented Mar. 13, 1888.

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S. THOMAS.

YMBGYHANISM FOR SEPARATING GOAL, 8w. 7 No. 379,253. Patented Mar. 13, 1888.

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UNITED STATES PATENT @EFICE.

SEPTIMUS THOMAS, OF SORANTON, PENNSYLVANIA.

MECHANISM FOR SEPARATING COAL, 80C.

SPECIFICATION forming part of Letters Patent No. 379,253, dated March 13, 1888.

Serial No. 212,132. (No model.)

To all whom, it may concern:

Be it known that I, SEPTIMUs THOMAS, a citizen of the United States, residing at Scranton, in the county of Lackawanna and State of Pennsylvania, have invented certain new and useful Improvements in Mechanism for Sepa rating Goal, Ore, &c., ofwhich the following is a description.

My invention relates to the removal of extraneous substances from coal, and to the separating of different qualities of coal'; and the object of my invention presents an improvement in the construction of machines for this purpose, and more particularly in that shown in patents granted to me and numbered, respectively, 200,360 and 161,840.

My improvements are chiefly in constructing the inclined planes over which the coal is to travel of two or more materials, each of which has been found to possess a particular attraction for different kinds of coal, or for the impurities often found mixed with the coal; and, furthermore, the improvement consists in the adoption of mechanical devices permitting greater rapidity in the handling of the coal and in adjusting the angle of inclination of the chutes, for it has been found by experience that different qualities of coal are best treated b y giving certain pitches to the chutes.

In the accompanying drawings similar letters of reference indicate like parts.

Figure 1 represents a side elevation of my improved machine, and Fig. 2 is a plan view of the second or lower chute. Fig. 3 is a sectional elevation.

A is the frame carrying the different parts of the machine.

B is the first separatingchute which the coal reaches after leaving the screen of the coal-breaker H; G, the second separatingchute, D, the chain connecting the two chutes, and E is a lever, by means of which and the link E the chutes may be actuated; F, the box to receive the rough coal; G, thesprocket wheel actuating the chain and buckets.

The first chute, B, is-constructed of two or more materials-as, for instance, of iron and of stone-formed in sections extending across the path of the coal.

The upper part of second chute, O, as shown 12, Fig. 2, reaching across from side to side of frame A. The middle portion is composed of decarbonized steel, malleable iron, brass, or other material which possesses similar qualities.

7 represents a cast-iron plate, which may be adjustable by any simple mechanical means, for the purpose of limiting the opening f.

00 00 represent the pivotal points of the upper and lower chutes.

j represents an eccentric, by means of which and the gateway t the coal is fed into the chutes, this construction being the same as shown in my Patent No. 200,360.

The coal traveling over the first separatingchute separates itself from the impurities, and, acquiring a greater velocity than the latter, passes over the opening f and is collected in suitable pockets or bins from K. The im purities-such as slate, particles of coal, and rough pieces-drop through the opening f onto the perforated surface I), which will allow t-hefine particles to pass through it. The slate, traveling at a slower velocity, meets the openingf and passes through it, while the rough coal, shooting across the opening, is received in the box F, and from thence carried by the buckets to a suitableelevation,which will permit it to reach the chute K and mix with the first coal. Under the opening f are suitable oonveyers to remove the material falling through.

The separation of different qualities of coal and of extraneous matter is accomplished by 8 5 taking advantage of the qualities possessed by in Fig. 2, is constructed of perforated metal,

certain substances of attracting these materials more strongly than others, or exhibiting a greater friction when they pass over its surface.

When changing from one kind of coal to another, it is found necessary to rapidly alter the inclination of the chutes, and to accomplish this in a satisfactory and easy manner I connect the two chutes together and to the frame 5 A, so that by operating the lever E the chutes may be rapidly moved either upward or downward.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a coal separator, the combination of a supporting-frame, an upper chute hinged to the said frame, so as to swing in a vertical plane, and provided with a pulley placed externally on the side thereof, a lever and link 5 adapted to raise or lower said chute, a lower chute situated under the upper chute and hinged thereto, and a chain passing over said pulley having one end secured to the lower part of the supporting-frame below the plane of the said pulley, and the other end attached I0 to the free end of the said lower chute, substantially as described, and for the purpose I specified.

SEPTIMUS THOMAS.

\Vitnesses:

PRESTON ROBINSON, 1 P. J. KENNY. 

